Sweet Home Gift Rectangle Bamboo Voice Activated Silent LED Digital Snooze Alarm Clock Bedside with Temperature Nightlight (White LED) Product Dimension: 15cm*4cm*11cm(Length*Width*Height) Very quiet to provide you a good working and sleeping environment. Powered by: 4 AA batteries (not included) or DC / USB (included). Clear and bright display of Date, Time and Temperature. Display can be set to Voice Activated mode, in which mode LED display will turn off after 15 seconds.